4" dieci Series 2-Way Car Speakers Peak: 60 watts RMS: 30 watts Impedance: 4 ohm Sensitivity: 92 dB Frequency response: 70-21,000 Hz 3/4" Neodymium Dome Tweeter Pure copper voice coil Water-repellent treated paper cone. TPU Surround Anti-vibration rubber magnet cover Top-mount depth: 1.70"